Quickly-detachable plowshare.



A B. MIL LER & E. I. 2HALUPA. QUICKLY DETACHABLE PLOWSHARE.

APPLICATION FILED MAR. 27. 1916.

Patented Oct. 31, I916.

Bmcir Amour? "IE/8!; I I

{plow in general.

STATES PATENT OFFICE.

aunnnw B. MILLER an]: EDWARD J. CHALUPA, or BALDWIN, WISCONSIN, assmnonsor ounrounrn 'ro MADS NELSON, or BALDWIN, wxsoousm.

QUICKLY-DETACHAIBLE PLOWSHARE Specification of Letters Patent.

Patented Oct. "1, 1916.

To all whom it may concern Be it known that we, ANDREW B. MILLER andEDWARD J. CuALUrA, citizens of the United. States, residing at Baldwin,in the county of St. Croix and State of Wisconsin, have invented a newand useful Quickly- Detachable Plowshare, of which the following is aspecification.

Our invention relates to plows, and the object is to provide a plow withan easily and quickly detachable but firmly held share, so that wheneverthe share needs sharpening or repair or is to be exchanged for a largeror otherwise difi'erent share, it maybe removed and another sharereplaced without the use of tools.

,In the accompanying drawing-Figure 1 is a bottom view of a plowembodying our invention. Fig. 2 is a side elevation of the plow andimprovements shown in F ig. 1. 3- is an enlarged section on the linea--a in ig. 1. Fig. 4 is an enlarged section on the line bb in Figs. 1and 2. Fig. 5 is an enlar (1 section on the line c o in Fig. 1.

Re erring to the drawing by reference numerals, 1 designates the beam, 2the land- -ide, 3 the mold board and 4 the share of :1

Usually braces like 5 extend from the mold. board to the landside orto-some reinforcing strip similar to the bar 6 in the drawing and theshare is welded or otherwise secured either to the land-side or to thebar 6, so it can not be detached therefrom withoutconsiderable troubleand loss of time. To overcome said dilllculty we make the share easilydetachable in the following manner: The forward end of the share 4 isformed at its underside with a taper socket 7 having a lon 'tudinal slit8,

the socket 7 and upon the underside of t e rear portion of the share isprovided a socket 9. And to the landside is secured by bolts 10 a flatbar 6, havin its forward end 11 made taper so as to'fit into the socket7. To said end portion 11 of the bar is permanently secured by weldingor like means avertically curved frog plate 12, which when the horn 11is n rejects edgewise out pf the slit 8 of same. Upon said plate 12 15securedeither by boltsor rivets, 13, the adyicent portion of themold-board 3.

Pivotally mountedon the plate 12, at 14 -and 15 ivel' are two catches-orlevers 163ml 17. The ever 16 has at onoenda.

hook 16 normally engaging in the forward end of the socket 9 and. at theother end it has a keeper or guard 16 into which the adjacent end oflever 17 swings and locks lever 16 when the latter is in the socket 9.Lover 17 also has an arm 17 engaging in the rear end of the socket 9,swinging also into a notch 18 in the socket (see Figs. 1 and 3).,

The rearward end 17 of the lever 17 serves as a handle by which thelever is partly sprung and forced into said locking engagement with thelever 16 and the socket, where it is thus held by ample friction toprevent unwarranted unlocking until the lever is forced to the positionshown in dotted lines in Fig. 1, when the share is to be removed.

From the foregoing description it will be understood that the lockinglevers 16, 17, when locked hold very firmly the share with its socket 7upon the horn 11, becausc the lever end 16 stands forced rearwardlyagainst the socket 9 of the share, and as the lever arms 16 and 17*extend over the edge of the plate 12 and are sprung into the socket 9they force the plate and the share firmly together with their adjacentsurfaces. and the hook 16 being rounded near its point acts as a cam inone side of the socket 9 of the share to force the share with its edge19 against the edge 20 of the mold board.

In Fig. 5 is shown how the pivot 15 may be relieved of much of the forceapplied to the lever 17, by mounting said lever on an embossment or stud21 on the plate 17 and retaining the lever upon said stud as a fulcrumby a washer 22 and a rivet 15". It is obvious that the lever 16 may besimilarly mounted.

What we claim isz-- 1. In a plow, the combination with a landside memberhaving a forwardly projecting shank and a vertically curved plate and amold-board secured to the ple :e, of a plow share having underneath itsl xrward end a taper socket adapted to fit upon the shank and having alongitudinal notch or slit .for'

the forward edige of the plate,-a11d means at the undersi e of the rearends of the share and of-the adjacent portion of the plate for-lockingthem together'in a readily 10.5 detachable manner, said locking meanscom- I prising a catch on one ofthe said ad ecent' parts, andjaicam hookpivotedpfl the-Qu e part and adapted to be iorcednnto holding Shank andavert cally curved plate antlea en agement wrth the catch and mean formold-board secured to the plate, of a plow rloc 'ng' the cam hook insaid position. 1 share having underneath its forward end a 2. Ina plow,hezoombmetion witha landtaper socket adapted to.'fit upon the shank 50 5side member having a forwardly projecting andhaving a longitudinal notchor slit for I shankand a vertu-ally curved plate and a thefforwer d edgeof the plate, and means mold-board secured-totheplat of a plow at theundersideof therear ends of the share having underneath its forward enda share and of Lheadj'acent portion of the taper, so h adaptedtofitfupon the shank Elate for locking theni together in a readily asand having -a-:loiigitudinal notch or slit .for etachable manner, saidlocking means comthe forward edgfe oithezplate, and means at prising asocket and a, catch fixed on the the underside o the rear ends of theshare share, a hooklever pivoted on'the plate and and of the ad acentportion'or' the plateffor adapted to engage with its hook into thelocking themtogether in a readily detaehsocket, and a friction heldleverjulcrumed 60 able manner, sai lockin means comprising on the'plate,and arranged to force and hold a catch fixed on one o the said adjacentthe hook-lever in locked position and to be parts, a cam-shaped hookpivoted on the engaged by the catch on the share.

other part and arranged to engage the catch, 5. In a plow, thecombination with a land-- and a lever pivoted on the same part as theside member having a forwardly projecting 65 hook and arranged to forceand to hold the shank and a vertically curved plate and a hook in enagement with the catch. mold-board secured to the plate, of a plow 3; Ina p ow, the combination with alandshare having underneath its forwardend a side member havinga forwardlyprojecting taper socket adapted tofit upon the shank shank and a vertically curved plate and a and havinga longitudinal notch or slit for 70 mold-board secured to the plate, ofa-plow the forward edge of the plate, and means share having underneathits forwardenda at the undersi e of the rear ends of the taper socketadapted to fit upon the shankshare and of the adjacent portion of theand having a longitudinal notch or slit for plate for locking the'mtogether in a readily ;the forward ed e of the plate, and meansdetachable manner, said 1 king means com- 75 at the undersife of therear ends of the prising a socket and a catch fixed on the share and ofthe adjacent portion of the share,'ahook-lever pivoted on the plate andplate for lockingthem. together in a readily adapted to en e with 'itshook into the detachable manner, said lockin means comsocket, and ariction-held lever fulcrumed rising a catch fixed on one o the said adonthe plate and arranged to iorce and hold 80 acent parts,a cam shapedhook pivoted on the hook-lever in locked" ositlon and to be the otherpart and arranged to engage the engaged by the catch on t e share, thepivot catch, and a lever pivoted on the same art joint of one of saidlevers comprising a as the hook and arranged to force an to heavy studfixed on the plate for the lever hold the hook in engagement with thecatch, to swing :on, a-washer retaining the lever 85 40 said leverhaving an arm arranged to enupon the stud and a rivet or like means ingage when in locked position a portion of the middle of the stud forsecuring the the catch in such a manner as to thereby washer upon theend of it. V clamp together the overlapping edges of the In testimonywhereof we aflix our signasaid arts. tures.

I 4. In a plow, the combination with a land- ANDREW B. MILLER,

side member having a forwardly projecting EDWARD J. CHALUPA.

